Difference between V-bit and ball end mill for cnc relief carving

Hello I’m new here and am trying to get familiar with the snapmaker 350 model.
I have successfully laser engraved a photo in greyscale.
I tried to do the same greyscale photo as a relief carving.but using the v-bit, the outline of the image was great but it’s like the image had too much detail or data and every line was crisp which rendered the details of the image unrecognizable…
Its almost as if I need to soften of puff up the details to get a smoother end result.


Would using the ball end mill produce a better result? or any suggestions on how I can get this to carve in relief? the laser engraving came out wonderfully using luban software and a piece of cherry wood. using the same wood for carving cnc did not come out well.
after getting it to carve < my next goal will be to try and print it. the photo is of a bronze figure I have so I can get other angles etc.
Any suggestions would be greatly appreciated

I don’t think your problems are really caused by which bit you’re using.
The way luban does relief carving is by taking the black levels and interpolating depth from that. White being the least depth, 100% black being the deepest.
So it’s not really going to do a true 3D unless you have a file that’s correctly set up for it. You’re going to end up with some weird areas that are raised in the wrong places.
Now If you have a 3d file, dxf or stl, that’s another story.

Here’s an article that does a good job explaining it:

-S

3 Likes